Drilling down the price tag per unit, $2.02 covers the "overscroll
bounce" technology cited in the '318 patent. That technology lets users
know when they've reached the bottom of a screen or list by responding
with a bounce.

Another $3.10 covers the "scrolling API" technology from the '915
patent. Another $2.02 is for the "tap to zoom and navigate" feature from
the '163 patent. And finally, $24 covers the use of any of Apple's
"design patents or or trade dress rights."